Báo cáo khoa học: "Better Hypothesis Testing for Statistical Machine Translation: Controlling for Optimizer Instability" pptx

... Association for Computational Linguistics:shortpapers, pages 176–181, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics Better Hypothesis Testing for Statistical Machine ... experimen- tal outcomes, and make recommendations for reporting results more accurately. 1 Introduction The need for statistical hypothesis testing for ma- chi...

Ngày tải lên: 23/03/2014, 16:20

... Association for Computational Linguistics:shortpapers, pages 182–187, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics Bayesian Word Alignment for Statistical Machine ... Initialize A 2 for k = 1 to K do 3 for each sentence-pair s in (E, F) do 4 for j = 1 to J do 5 for i = 0 to I do 6 Calculate P (a j = i| · · · ) according to (7) 7 Sampl...

Ngày tải lên: 23/03/2014, 16:20

... n-gram language mod- els in statistical machine translation: a back- ward language model that augments the con- ventional forward language model, and a mu- tual information trigger model which ... model (F+M) selects the former while the baseline selects the latter. The forward language model score for the baseline hypothesis is -26.41, which is higher than the score of the F+M hyp...

Ngày tải lên: 07/03/2014, 22:20

... show for the first time that integrating a WSD sys- tem improves the performance of a state-of- the-art statistical MT system on an actual translation task. Furthermore, the improve- ment is statistically ... evi- dence on whether word sense disambigua- tion (WSD) systems can help to improve the performance of statistical machine transla- tion (MT) systems. In this paper, we suc- cessf...

Ngày tải lên: 08/03/2014, 02:21

... little interest for the structure-based alignment model if we have to manually find 1360 the language structures and write a grammar for them, since the primary merit of statistical machine translation ... (400,000 words altogether for both languages) were used for training. The same data were used to train Simplified Model 2 (Wang and Waibel, 1997) and IBM Model 3 for pe...

Ngày tải lên: 08/03/2014, 06:20

... Person_Out, Position, Organisation> In the following tables, we use PI for Person_In, PO for Person_Out, POS for Position and ORG for Organisation. In our experiments, we attempt to investigate ... extraction of Nobel Prize awards and management succession events. Perfor- mance for the new Nobel Prize task is strong. For the management succession task the results compare...

Ngày tải lên: 23/03/2014, 18:20

... {(x 1 , y 1 ), (x 2 , y 2 ) (x p , y p )}. The performance of the system for these initial points provides evidence for predicting its perfor- mance for larger sample sizes. In order to do so, a ... features, among others, for predicting transla- tion accuracy (Section 4). In a Machine Learning context, Perlich et al. (2003) used learning curves for predicting maximum performance...

Ngày tải lên: 07/03/2014, 18:20

... system merely performs phrase-based machine translation and is not specif- ically geared towards simplification were it not for the dissimilarity-based re-ranking of the output, it performs not significantly ... Association for Computational Linguistics. Kenji Yamada and Kevin Knight. 2001. A syntax- based statistical translation model. In Proceedings of the 39th Annual Meeting on Assoc...

Ngày tải lên: 07/03/2014, 18:20

... subcomponent for generating word inflec- tions into a statistical machine translation (SMT) system. Our research is built on previous work in the area of using morpho-syntactic information for improving ... the translation models. 6 MT performance results Before delving into the results for each method, we discuss our evaluation measures. For automatically measuring performance, we...

Ngày tải lên: 08/03/2014, 01:20

... 2007. c 2007 Association for Computational Linguistics Tailoring Word Alignments to Syntactic Machine Translation John DeNero Computer Science Division University of California, Berkeley denero@berkeley.edu Dan ... with separate parameters for j = 1, j = J and shared parameters for all 1 < j < J. Null alignments have fixed probability at any position. Inference over a requires o...

Ngày tải lên: 08/03/2014, 02:21